Mold for casting concrete structures.



E. P. HENRY. MOLD FOR CASTING CONCRETE STRUCTURES.

APPLICATION FILED NOVl I8, l9l3.

Patented Spt. 4, 1917?".

2 SHEETS-sluier 1.

EE. P. HENRY. MOLD FOR CASTING CONCRETE STRUCTURES.

APPLICATION FILED NOV. I8, I9I3- 9y9 Patentedept. 4,191?.

2 SHEETS-SHEET 2.

r srarns narnia ermee.

EDWARD P. HENRY, OF LONG BEACH, CALIFORNIA, ASSIGNOR 0F ONE-HALF TOGORDON H. CLARK, OF LONG BEACH, CALIFORNIA.

IVIOLD FOR CASTING CONCRETE STRUCTURES.

Specification of Letters Patent.

Patented Sept. a, 191i "t.

Application filed November 18, 1913. Serial No. 801,741.

To all 'whom z' may concern:

Be it known that I, EDWARD l?. HENRY, a citizen of the United States,residing at Long Beach, in the county of Los Angeles and State ofCalifornia, have invented a new and useful Mold for Casting ConcreteStructures, of which the following is a specification.

This invention involves the construction of poured walls, so termed inthe art, and the mold or forms for their production.

An object of this invention is the production of concrete structureswith minimum expenditure of time and money.

Another object is the production of a sectional mold of minimum weightand thickness and maximum strength and rigidity which can be'assembledand knocked down with minimum labor and maximum expedition.

By the construction and arrangement of the elements of this invention, Ipropose with the labor of, say, four men to erect a mold for a smallstructure as, for instance, a bungalow and to pour the concrete for suchstructure in one day, and to manufacture larger structures inproportionately short periods of time.

More specifically stated I construct a substantially rigid mold frame ofstandards and latch bars, the latch bars connecting and locking thestandards together, and said standards comprising pairs of outer andinner members or joists which are securely tied and keyed to one anotherto prevent relative movement of said joists. After the frame has beenconstructed or while it is still under construction, form plates areplaced from standard to standard and are detachably fastened to thestandards by latch bars overlapping adjoining edges of the plates so asto form tight joints to sub-V stantially prevent leakage of water andcon crete while the concrete is yet in a fluid state.

It has heretofore been customary to draw the plans of a buildingstructure without any special reference to the mold which is to beemployed in molding the structure, that is, the structure is notccniined to dimensions based on any particular unit of size. It isobvious that in this invention the form plates may be cut to suchdimensions as will produce structures varying in size by a fraction ofan inch, but this inu vention contemplates that building structures beplanned with a definite unit of dimension in view, so that suchstructures may `be cheaply and quickly erected without Waste ofmaterial; and for this purpose the mold is constructed of unit sectionsof a given dimension or multiples of such dimension.

Further objects and advantages may appear in the subjoined detaildescription and the drawings filed herewith and forming a part of thisspecification.

The accompanying drawings illustrate the invention.

Figure l is a plan view of my newly invented mold for casting a smallbungalow or the like, with window and door frames in place.

Fig. 2 is an enlarged sectional detail of some of the parts in Fig. l online indi* cated by m2, Fig. 3.

Fig. 3 is a sectional elevation on line indicated by x3, Fig. 2, aportion of one of the keepers being broken away for clearness ofillustration.

Fig'. 4 is an enlarged broken View on line indicated by m4, Fig. 5, withconcrete in place.

Fig. 5 is a broken sectional elevation on line indicated by m5, Figs. land il, the concrete being omitted and portions of some of the insideplates being broken away for clearness of illustration.

Fig. 6 is an enlarged sectional detail on line indicated by Fig. 5.

Fig. 7 is a sectional elevation on line indicated by m7, Fig. 6,omitting the standard member.

The elements hereinafter enumerated are preferably all of metal and may,of course, be constructed in different shapes than those specificallydescribed and depicted in the drawings.

Standards 1 of the mold frame comprise pairs of opposing bodies orjoists which have their exterior surfaces, relative to the completedmold, angular in cross-section, and the shapes of such joists varyaccording to the location of the standards. For instance, the joists maybe composed of one or more members in the shape off, angleirons 2 orT-irons 3 grouped as in the drawings, or may be constructed of any othersuitable shapes grouped as deemed best for the structure to be built,and it is underlie stood that I at present prefer the shapes A and maybe formed interiorly by the angle irons arranged in pairs, the T-ironsand angle irons thus forming groups of three separate members; and otherintermediate standards may be formed entirely by the T-irons 3 arrangedinfgroups of two separate members. Y.

The joists 2, 3 are provided with ,perforations 4 to receive taper tiebars 5 which are approximately square in cross section and provided witha series of oblong slots 6 disposed in the same direction and adapted toreceive wedges 7, the spacing of said Slots being an inch, more or less,in order that the joists may be correctly spaced and locked for theformation ofpvari'ous thicknesses of walls, say from four to ten inchesin thickness.

The wedges 7 are designed to engage loops 8 provided on each joist tolock the joists of each pair against movement toward one another. Theloops are arranged on the external faces of the joists or standards,that is to say, the faces that are` eiiternally presented when the moldis completed, and a loop 8 is provided adjacent to and below each slot 6and the wedge-keys 7 when driven through the slots 6 enter the wedgeinto said loops, thus rigidly tying the taper tie bars and the joists orstandards together.

Means are provided to complete the mold frame and to securely lock thestandards 1 in place relative to and in parallelism with one another,and for this purpose the joists 2, 3 are provided with keepers 9 made oftwisted bars or the like and having notches 10 to receive and detchablyhold the ends of latch frame bars 11 having offsets 12, the purpose ofwhich will appearhereinafter. The latch frame bars 11, in the instanceshown, are formed of angle irons and to facilitate the formation of theoffsets 12, the horizontal legs of the angle irons may be cut away attheir ends to produce lnotches 13 adjacent the offsets and notches, 10.

`The latch bars 11 are provided near their ends with slots 131 designedto engage the bottoms of the notches 10 so as to lock the joists ofadjacent standards against movement toward and from one another. SeeFig. 3.

Adjacent standards 1 are connectedfrom joist to joist with rectangularform plates of appropriate dimensions, and I prefer to make the formplatesin, say, two sizes 14, 15, the plate 14 being, for instance,eighteen `inches by thirty-six inches, and the plate 15 being eighteeninchessquare, thus providing for the erection of the mold in unitsformed, `in this 'instance, in multiples of eighteen inches in length,width and height.

Theform'plates 14, 15 have offsets`16 near their ends to bring theirinside faces substantiallyflush withthe inside faces of the joists 2, 3,said offsetsiclosely fitting against the offsets 12 of the frame bars 11`and the upper and lower edges of said plates butting and beingoverlapped by Athe latch bars 11 which fit closely fromAend to endagainst said platesandthus materially aid in making tightjointsbetweenadjacent plates.

The foregoing construction produces such great rigidity of the mold thatordinarily it will not be ynecessary lto employ any elements to stiifenthe same otherthan those alreadyenumerated,however, in case additionalstiffening is desired, I provide braces or tie rods 17 designed to lieon'the upper edges of the mold and adjustably connected to oppositeportions of the mold byforked clamps 18 and set screws 19 screw-threadedthrough'V the clamps and againstV the tie rods so as to fix the clampsat appropriate intervals along the bracerods in positiony to straddle`the upper ends of some `of the lioists 2, 3, as in Fig. 6, or any otherconvenient. parts of the mold.

I propose tol ca'stthewalls ofthe structure with the 4door and windowframes in place and for this purpose perforations- 20 are providedintheform platesl at appropriate positionsv to accommodate detachableheaded studs 21 on which the frames 22 vare Y hung. See Fig. 5,. y n

In practice the joists 2, 3 willipreferably be locked' together by suchmeans as the tie bars 5,`wedges 7 and. loops S'to form the standards 1,either before reaching the site ofthe proposed building structure orafter transportation :to such site before` erection of the mold on thesite selected or designed to receive the structure.

Then a standard'1, say at the'lcorner of the proposed building or at anyother preferred portion thereof, will .be erected and plumbed and :willbe temporarily held in its plumbed position by guy lines indicated at23jn Fig. 1. i Y

Then a second standard will'be erected and rigidly fixed inparallelism..to the first standard by connecting ksaid standards at topand bottom with latch bars 11. This plumbs the second `,standard inaccordance with the'plumbing of the first standard.

yThen other of the standards will be erected and connected one to theother by latch bars 11 in accordance with the building plans -tocomplete a mold frame of thev there are a number of workmen, while theerection of the standards goes on, the form plates 14, 15 will be placededge to edge one above the other from standard to standard and will befastened to the standards by placing the latch bars 11 over the jointsbetween adjacent plates and slipping the ends of said bars in notches 10of the keepers 9; the frames 22 for the windows and doors being hung inposition on the studs 21 as the work proceeds.

If desired the brace rods 17 secured in mold.

When one tier or more of the form plates, 14, 15 has been fastened inplace, the operation of casting or pouring` the walls may begin and assuch operation is well understood it need not be described in detail,and it is understood that the operation may be performed in any mannerand by any means now known in the art or that may be known in thefuture.

Preferably the mold will be completed from bottom to top, at least atone section thereof before casting of the walls begins.

Then the concrete has hardened sufliciently, as determined by practiceand the judgment of the constructor, if the walls are to be no higherthan the one tier of standards, the latch bars 11 and form plates 14, 15will be removed, then the wedges 7 will be removed from the slots 6 andthen the tapered tie bars 5 will be hammered or otherwise driven out ofthe wall u and standards 1, whereupon the standards will be removed fromthe structure.

If the walls are to be higher than the one tier of standards 1, thetapered tie bars 5 and wedges 7 will be allowed to remain in place tomaintain the standards in their positions, and an upper second tier ofstandards will bc erected in alinement with and on the upper ends of thelower tier of standards and connected by latch bars 11, as beforedescribed, to produce the second tier of the mold frame.

Then as before described form plates will be connected from standard tostandard of the upper tier the same as for the lower tier and casting ofthe walls will proceed; and so on until the walls have been constructedto the rdetermined heights, whereupon'the standards of successive tiersfrom top to bottom will be loosened from the walls by removing thewedges 7, thus allowing all of the standards and tapered tie bars 5 tobe removed from the structure and the openings in the wall caused by theremoval of the tie bars may be filled with concrete may then be place toadditionally stiftenI the if so desired.

The plates of th'e formtier immediately below the plates -of the nextupper tier under construction are generally left in place until theoperation of casting at said upper tier is completed, whereupon saidplates are raised by suitable tackle or the like, not shown, to thesecond tier of standards above.

To facilitate the use of such tackle, the plates 14, 15 are providednear their ends with outwardly punched holes 24.

From the foregoing it will be seen that I not only propose to castconcrete to form continuous walled monolithic structures of a naturewell known in the art; but that I also propose to employ means whichwill expedite the manufacture of such structures; and that like afounder of metallic products, I first set up a rigid mold which onaccount of the size and variable dimensions of the product, I make ofinterlocking sections, taking care that the rigidity of the mold is notmaterially impaired by making it in sections; and that to insure suchrigidity I have conceived of the specific features hereinbeforedescribed.

I claim 1. Av metallic mold for casting concrete structures, which moldcomprises standards, each standard being composed of two separatemembers, there being oppositely disposed corresponding perforations inthe members of each standard; taper tie bars for said standards, each ofsaid tie bars being approximately square in cross section and adapted topass through said opposite perforations for connecting the members ofeach standard with each other, there being oblong slots disposed in thesame direction and spaced apart throughout the length of each tie bar; aloop below and adjacent to each of said perforations on such a surfaceof each member as is in an external relation to the completed mold;plates connected from member to member of adjacent standards; andwedges, each of which is adapted to engage one of said slots, one ofsaid loops and one of said external surfaces for holding the respectivemembers of each standard in a fixed relation to each other.

2. A metallic mold for casting concrete structures, which moldcomprises, standards each composed of a single T-iron and two angleirons, means to lock said ll"irons and angle irons against relativemovement, 115 plates, and bars detachably fastening said plates to theT-irons and angle irons respectively of adjacent standards.

3. A metallic mold for casting concrete structures, which moldcomprises; a frame 120 composed of corner standards, intermediatestandards and bars detachably connected to the standards; said cornerstandards each consisting of two angle irons and said intermediatestandards each consisting of two 125 T-irons; means to lock the angleirons and T-irons of the corner and intermediate standards respectivelyagainst relative movement; and plates fastened to the frame by saiddetachable bars.

ironsof the standards respectively against relativemovement; and platesfastened t0 the frameby said detachable bars.

.ln testimony whereof, I have hereunto set 15 my hand at LosAngeles,California, this lst day7 of November, 1913.

JAMES R. ToWNsEND, GEORGE H. HILES.

4. A metallic mold for casting concrete structures, which moldcomprises; a frame compcsed of corner standards, partition intersectionstandards, other intermediate standards and bars detachahly connected tothe standards; said corner standards each consisting of two angle irons,said partition intersection standards each consisting of a T- ironandtivo angleiirons, and said intermediate standards each consisting oftwo T- irons; means to lock the angle irons and T- Copies of this patentmay be obtained for ve cents each, by addressing the Commissioner ofIatents, Washington, D. C.

